Multiple-spindle boring-machine.



No. 765,601. PATENTED JULY 19, 1904.

' 0. SEYMOUR.

I MULTIPLE SPINDLE BORING MACHINE.

APPLICATION FILED JAR. 22, 1904.

N0 MODEL. 5 SHEETB-SHEET 1.

\x N /NVENTO/? WITNESSES: N

PATENTED JULY 19, 1 904.

A TTOHNE rs No.765,601. v PATENTED JULY 19, 1904.

' U SEYMOUR MULTIPLE SPINDLE BORING MACHINE. APPLIOATION FILED JAN. 22,1004.

WITNESSES:

INVENTOH No. 765,601. PATENTED JULY 19, 1904. c. SEYMOUR. MULTIPLESPINDLE BORING MAGHINE.

APPLIOATION FILED IAN. 22, 1904.

NO MODEL. 5 8HEETSSHEET 5.

Patented July 19, 1904.

UNITED STATES PATENT OEEIcE.

CHARLES SEYMOUR, or nEFiANoE, OHIO, ASSIGNOR TO THE DEFIANCE MACHINEWORKS, or DEFIANCE, OHIO.

MULTIPLE-SPINDLE BORING-MACHINE.

SPECIFICATION forming part of Letters Patent N0. 765,601, dated July 19,1904.

Application filed January 22, 190 Serial No. 190,162- (No model.)

' the following is a full, clear, and exact description.

The invention relates to woodworking machinery; and its object is toprovide a new and improved multiple spindle boring-machine arranged topermit a convenient adjustment of the boring-tools relative to the work,to bore a number of holes simultaneously and in a desired predeterminedorder, and to allow adjustment of the work-carrying table relative tothe boring-tools to bore holes of a desired depth without varying thethrow of the work-carrying table.

The inventionconsists of novel features and parts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a front elevation of the improvement, showing thework-carrier in a lowermost position. Fig. 2 is an enlarged transversesection of the same on the line 2 2 in Fig. 1. Fig. 3 is a similar viewof the same on the line 3 3 in Fig. 1, showing the workcarrierin araised position. Fig. 4 is an enlarged sectional plan View of theimprovement on the line 4 4 in Fig. 2. Fig. 5 is an enlarged sideelevation of the adjustable guideway and the spindle-carrier, part ofwhich is shown in section. Fig. 6 is a sectional plan View of thefastening device for securing the guideway in position on theframe-beam. Fig. 7 is a perspective view of the wedgeblock for lockingthe spindle-carrier in place on its guideway; and Fig. 8 is a sectionalfront elevation of the adjusting mechanism 'for the table, the sectionbeing on the line 8 8 of Fig. 2.

On a suitably-constructed main frame A is mounted to reciprocate up anddown aworkcarrier B for moving the piece of wood to be bored first upinto engagement with a boring-tool C for the latter to bore the desiredholes and then the work moves downward with the work-carrier to move thework away from the boring-tools for the latter to pass out of the boredholes, so as to permit the operator to shift the work for boring anotherset of holes or for removing the finished work and replacing it byanother piece of wood to be bored.

The work-carrier B consists, essentially, of a table B, held verticallyadjustable on slides or cross-heads B mounted to slide in verticalguideways A, forming part of the main frame A. The table B is providedat its top with a removable table-board B made of wood and on which thework rests, and the said table B is provided with depending arms B,mounted to slide vertically in suitable guideways B arranged on theslides B as plainly illustrated in Fig. 4:.

In the arms B are mounted to turn vertically-disposed screw-rods D,screwing in nuts B on the slides B and the upper ends of the saidscrew-rods D are provided with bevel gear-wheels D, (see Fig. 2,) inmesh with bevel gear-wheels D secured on a longitudinallyextending shaftD journaled in the table B and provided with a hand-wheel D, adapted tobe taken hold of by the operator to perrnit the latter to turn the shaftD to impart a simultaneous turning motion to the screwrods D in eitherdirection, according to the direction in which the hand-wheel D isturned. By turning the hand-wheel D in one direction the screw-rods Dcause an upward movement of the table B on the slides B and by turningthe hand-wheel D in an opposite direction the table B is moved downwardon the slides B Thus by the arrangement described the table B is heldvertically adjustable on the slides B As the slides B have a fixedup-and-down throw, it is evident that the table B can be so adjusted tothe slides B that the work is fed a greater or less distance to theboring-tool O 'to bore holes of more or less depth, as required. It willalso be seen that by the arrangement mentioned work of varying heightsare journaled friction-rollers E in peripheral contact with cams F,secured on a shaft F, journaled in suitable bearings on the main frameA. The shaft F is adapted to turn in the direction of the arrow a, (seeFigs. 2 and and the cams F, secured on the said shaft, are so shapedthat a slow upward-feeding motion is given to the work-carrier B whilethe holes are bored by the boring-tools O, and the cams also allow aquick return movement of the work-carrier after the holes are bored, itbeing understood that the weight of the Work-carrier and the workthereon is sufficient to hold the friction-rollers E in firm contactwith the peripheral faces of the cams F for the work-carrier to slidedownward by its own weight.

On one end of the cam-shaft F is secured a gear-wheel F in mesh with apinion F fastened on a shaft F*, journaled on the main frame andcarrying a gear-wheel F in mesh with a pinion G, secured on aclutch-shaft Gr, provided with a clutch G adapted to be engaged by aclutch-pulley G connected by a belt Gr with a pulley H on the main shaftH, journaled in suitable bearings A attached to a frame-beam Aconnecting the upper ends of frame-standards A with each other. On theshaft H is secured a cone-pulley H connected by belt with othermachinery for imparting a rotary motion to the shaft H. The latter, bythe pulley H and belt G, imparts a rotary motion tothe clutch-pulley Gheld loosely on the shaft Gr, but adapted to be moved by ashifting-lever I into engagement with the clutch G so as to transmit itsrotary motion to the clutch G and the shaft G, which, by the pinionG,the gear-wheel F shaft F, pinion F and gear-wheel F imparts'a rotarymotion to the cam-shaft F for the cams F to act on the friction-rollersE to give the desired up-and-down reciprocating motion to thework-carrier B.

In order to return the clutch-pulley G relative to the clutch G, ashifting device and an actuating device for the shifting device areprovided and arranged to allow the operator to move the clutch-pulley Gat will in or out of contact with the clutch G or to lock theclutch-pulley in position when in contact with the clutch G for anylength of time to insure a continuous reciprocation of thework-caroperator.

rier B or to throw the clutch-pulley G automatically out of engagementwith the clutch Gr each time the work-carrier B moves into a lowermostposition for stopping the work-carrier at this point.

For the purposes described the shifting-lever I is fulcrumed at itsupper end at I on the main frame A, and the lower end of theshifting-lever is pivotally connected with a shifting rod I extendinglongitudinally and mounted to slide in bearings arranged on the mainframe A. On the free end of the shifting rod I (see Figs. 3 and 4) issecureda cone I adapted to be engaged at its bevel side by the free endof an arm K, forming part of a treadle under the control of the foot ofthe The treadle is provided with side arms K and K of which the arm Kcarries the arm K, and the said arms K and K are attached to a shaftK",-journaled in suitable bearings in the rear portion of the main frameA. The front ends of the arms K and K i are connected with each other bya treadlebar K*, and to the side arm K is attached a spring K (see Fig.to normally hold the treadle in an uppermost position. The treadle-bar Kis adapted to be engaged by the foot of the operator for swinging thetreadle downward, so that the arm K moves upward and in engagement withthe cone I to push 9 the same from the left to the right, thus movingthe shifting rod 1 in the same direction to impart a swinging motion tothe shiftinglever I for the latter to move the clutch-pulley G incontact with the clutch G Now when this takes place the rotary motion ofthe clutch-pulley Gr is transmitted to the clutch G which by the gearingdescribed r0- tates the cam-shaft F, so that the cams F impart anup-and-down reciprocating motion to the work-carrier B for the purposepreviously described.

The up-and-down reciprocating motion of the work-carrier B continues aslong as the operator keeps the treadle-bar K pressed in a lowermostposition by the foot; but as soon as the operator releases or removesthe foot from the treadle -bar K then the treadle is swung upward by theaction of the spring K and consequently the pressure on the clutchpulleyG is released and the latter moves out of frictional engagement with theclutch G and the rotation of the shaft G and cam-shaft F ceases to stopfurther reciprocating of the work-carrier B.

From the foregoing it will be seen that by the arrangement described theoperator is enabled tomove the clutch-pulley G at will in or out ofcontact with the clutch G When it is desired to lock the clutch-pulley Gin engagement with the clutch G at the time the operator has removed thefoot from the treadle-bar K, the following device is provided: On theside arm K of the treadle is secured a pin K, (see Fig. 3,) adapted toIIO be engaged by the lower end of a lever L at the time the treadle isin a lowermost position, soas to hold the treadle against rising, andconsequently hold the clutch-pulley G in frictional contact with theclutch G The lever L is fulcrumed at L on the main frame, and itsswinging motion is limited between stop-pins L and L held on the mainframe. The upper end of the lever L is pivotally connected by a link Lwith a hand-lever L secured on a shaft L, extending longitudinally and journaled in suitable bearings on the front of the main frame A, the saidshaft L also carrying several other hand-levers L and L as illustratedin Fig. 1, to allow the operator to take hold of either one of thelevers L L or L to impart a rocking motion to the shaft L When one ofthe said levers L L or L is swung forward immediately after thetreadle-bar K has been pressed by the operator, then the link L impartsa swinging motion to the lever L, so that the lower end thereof swingsover the pin K, thus locking the treadle in a lowermost position. Whenone of the levers L L or L is swung rearwardly, as indicated in dottedlines in Fig. 3, then the lever L is swung out of the path of the pin Kto allow the treadle torise by the action of its spring K From theforegoing it will be seen that as long as the lever L holds the treadledown the clutch-pulley G remains in engagement with the clutch G and thework-carrier B is continually reciprocated as long as the lever L is inengagement with the pin K.

In order to allow of throwing the clutchpulley Gr automatically out ofengagement with the clutch G at the time the work-carrier B moves into alowermost position, the following device is provided; On the lever L(see Fig. 3) is pivoted at N a cam-arm N, adapted to rest with its lowerend on a bolt N held vertically adjustable on the lever L by extendingthrough a slot L in the said lever; The cam-arm N when resting againstthe bolt N is in the path of a projection N secured to the adjacentslide B of the workcarrier, so that when the several parts are intheposition shown in Fig. 2 and the lever L engages the pin K and thework-carrier moves downward into a lowermost position then theprojection N engages the cam-arm N and pushes the same rearwardly,thereby imparting a swinging motion to the lever L to move the lower endthereof out of engagementwith the pin K so that the treadle is unlockedand immediately returns to an uppermost position by the action of itsspring K When the treadle moves into this position, the clutch-pulley Gis released of pressure, and consequently moves out of contact with theclutch G and reciprocation of the work-carrier B ceases at the time theworkcarrier moves into a lowermost position.

When it is not desired to stop the reciprocation of'the work-carrier Bautomatically,

as just described, then it is only necessary for the operator to loosenthe bolt N and slide the same downward in the slot L, so as to move outof engagement with the free end of the cam-arm N, and as the latter nowswings by its own weight into a vertical position. on the lever L it isout of the path of the projection N and consequently the latter does notaffect the cam-arm N on the lever L at the time the work-carrier B movesinto a lowermost position.

The boring-spindle O for each boring-tool C is journaled in a suitablebearing P, held or formed on a spindle-carrier P, mounted to slidetransversly on bearings Q and Q arranged on the top and botton .of aguideway Q, projecting forwardly from the front face of the frame-beam Aand held longitudinally adjustable on the said beam, as hereinafter morefully explained. The several spindles O and their tools C are driven inunison from the main shaft H and for this purpose the upper end of eachspindle O is provided with a bevel gear-wheel O, in mesh with the bevelgear-wheel O having its hub .O mounted to turn in a bearing P formed onthe spindle-carrier P. The hub of the bevel gear-wheel O is mounted toslide on and to turn with a transversely-extending shaft O.,'journaledin suitable bearings arranged on the guideway Q, and the rear end of thesaid shaft 0 is provided with a'bevel gear-wheel O in mesh with a bevelgearwheel 0, adjustably secured on the main shaft H. When the latter isrotated, the several gear -wheels 0 rotate the bevergearwheelsO, andconsequently the transverse shafts O", which by the bevel gear-wheel Oand the bevel gear-wheel O rotate the spindles O and the boring-tools C.

In order to adjustably secure each guideway Q in position on theframe-beam A the latter is provided on its front face with alongitudinally-extending dovetail groove A engaged by the head R of apin R, held to slide transversely in the corresponding guideway Q, asplainly indicated inFigs. 2 and 5, and the said pin R is provided withan elongated slot R into which projects a wedge-shaped key R resting onthe guideway Qand pressed on at its base end by a screw-rod R, screwingin the guideway Q and under the control of the operator. By unscrewingthe screw-rod R the key R can be loosened in the pin R to loosen thelatter, so as to permit of shifting the guideway Q longitudinally on.the frame-beam A until the desired position is reached, and then theoperator screws up the screw-rod R to cause the key R to pull the pin Rforwardly for the head i R to securely clamp the guideway Q to the frontface of. the frame-beam A.

By the arrangement described the guide- Ways Q can be readily adjustedin a longitudinal direction to bring the same into adesired position,according to the location of the holes to be bored in the work.

A transverse adjustment of the boring-tool C is had by shifting thespindle-carriers P transversely on the guideways Q until eachboring-tool C is in the proper transverse position relative to the holeto be bored.

In order to securely fasten each spindlecarrier P in position after thedesired adjustment is made, a wedge S is provided, fitted to slide on aninclined bearing P formed on the bottom of the spindle-carrier B, asplainly illustrated in Fig. 5. The top of the wedge S is provided with aV-shaped groove S, fitting the correspondingly-shaped bottom hearing Qof the guideway Q, and the front end of the wedge S is engaged by a pinS adapted to be moved alternately by a screwrod S screwing in the frontlower portion of the spindle-carrier P. By screwing up the screw-rod Safter the spindle-carrier P has moved to the desired position on theguideway Q the pin S forces the wedge S rearwardly up the incline P thuscausing the wedge S to bind the guideway Q to securely lock thespindle-carrier P in position on the guideway. By unscrewing thescrew-rod S the wedge S is released from its binding action to allow ofshifting the spindle-carrier P laterally whenever it is desired to doso.

It is understood that although but one spindle-carrier P is shown asmounted on one guideway Q it is evident that two or more suchspindle-carriers may be mounted on one guideway and geared with theshaft 0* to allow of drilling two or more holes simultaneously and intransverse alinement with each other.

The operation is as follows: IVhen the several guideways Q and thespindle-carriers P have been adjusted to bring the boring-tools C in thedesired position, according to the holes to be bored in the work, andthe workcarrier B is in a lowermost position, then the work is placed onthe table-board B and, if desired, fastened thereto by suitable clampingmeans or the like, and then the operator presses the treadle-bar K, sothat the clutchpulley G is thrown into engagement with the clutch G toset the actuating mechanism for the work-carrier B into motion to movethe work-carrier upwardly, thereby feeding the work to the rotatingboring-tool C. The upward throw of the work-carrier B is uniform; but,as previously explained, the table B is adjusted relative to the slidesB so that the holes bored by the spindle C are of a desired depth, whichdepth can be varied by adjusting the table B up or down on the slides BAfter the holes are bored the work-carrier moves downward, and in caseit is desired to automatically stop the carrier at the time it reachesits lowermost position then use is made of the cam-arm N, restingagainst the bolt N so that the descending projection N unlocks thetreadle by imparting a swinging motion to the lever L, as previously eX-plained. In order to restart the machine after the work has been changedfor boring a new set of holes, the operator again presses thetreadle-bar K for starting the work-carrier B on its second upstroke.

hen it is desired to run the work-carrier B continually up and down, thecam-arm N is set out of action, as before explained, and the treadle islocked in a lowermost position by the locking-lever L engaging the pinK. In this case the work is changed by the operator during the time thework-carrier B moves into its lowermost position and after the lowerends of the boring-tool C are out of the drilled holes, it beingunderstood that ordinarily sufficient time is had by the operator formaking the desired change of the work previous to the work-carrier Bstarting on its upward stroke.

If it is desired for any reason whatever to stop the reciprocating ofthe work-carrier B the operator can throw one of the levers L, L or Linto a rearward position to unlock the treadle for shifting theclutch-pulley Gr" out of frictional contact with the clutch G to stopthe actuating mechanism for the workcarrier.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A boring-machine having a work-carrier,

consisting of reciprocating slides, a table connecting the slides witheach other and held adjustable thereon in the direction of the movementof the slides, a shaft mounted to turn on the said table, screw-rodsgeared with the said shaft and mounted to turn on the table, and nutsfixed on the slides and in which screw the said screw-rods, as setforth.

2. A boring-machine provided with a workcarrier mounted to slide, anoperating mechanism for the said work-carrier, adrivingdevice for thesaid operating mechanism, provided with a driven clutch-pulley, amanuallycontrolled shifting device for the said clutchpulley, and amanually-controlled locking device for the said shifting device, as setforth.

3. Aboring-machine provided with a workcarrier, mounted to slide, anoperating mechanism for the said work-carrier, a driving device for thesaid operating mechanism, provided with a driven clutch-pulley, amanuallycontrolled shifting device for the said clutchpulley, a lockingdevice for the said shifting device, and means on the said work-carrier,for automatically actuating the locking device, to unlock the saidshifting device, asset forth.

at. Aboring-machine provided with a workcarrier mounted to slide, anoperating mechanism for the said work-carrier, a driving device for thesaid operating mechanism, provided with a driven clutch-pulley, amanually- IIO m'atically controlled from the said Work-carrier, toautomatically stop the operating mechanism at the time the Work-carriermoves into a lowermost position, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

CHARLES SEYMOUR.

Witnesses:

GEORGE W. DEATRICK, J os. BAUER.

